文档介绍：第 40 卷第 1 期测绘学报 Vol. 40, No. 1
20 11 年 2 月 Acta Geoda etica et Ca rtographica Sinica Feb. , 2011
文章编号: 1001-1595( 2011) 01-0045-07
基于卡尔曼滤波的地形反演方法及其仿真研究
刘繁明, 钱东, 郭静
哈尔滨工程大学自动化学院, 黑龙江哈尔滨 150001
Terra in Estimation Algorithm Ba sed on Kalman Filter a nd Its Simulation Resea rch
LIU Fa nming, QIAN Dong, GUO Jing
College of Automa tion, Ha rbin Engineering University, Ha rbin 150001, Chi na
Abstract : A terra in estimation algorithm ba sed on Kalma n filter is proposed. Combining with gra dient anoma ly
measured by gravity gradiometer, the a lgorithm achieves the purpose of terra in estima tion by improving the accu-
ra cy and resolution of a low-resolution priori terrain. By introducing slope theory and rectangular prism method,
system error model a nd measure equation of the Ka lman filter are built first. After that a simulation research is
ca rried out to investiga te the effect of a lgorithm. The simula tion a na lyzes terrain mean noise, ra ndom noise and
gravity gradiometer precision. s influence on estimation accuracy. At last, a n area estima tion simulation is also
investigated. T he results show that both the precision a nd resolution of estima ted terra in have improved, which
confirmed the correctness of the algorithm.
Key words : gravity gradient; terrain estima tion; Kalma n filter; digital eleva tion model; slope
摘要: 推导基于卡尔曼滤波的海底地形反演算法, 算法通过利用重力梯度仪